Starting in August 2019, TOEFL iBT® test score reports will include a new set of scores called MyBest™ scores, in addition to the scores from a single test date. MyBest scores — sometimes generically referred to as superscores — are the highest scores on each section.
The use of MyBest scores
reflects an increasingly popular approach in university admissions of combining the highest section scores from multiple test dates. This practice provides opportunities for test-takers to leverage their best performance on each section, demonstrate growth in areas of relative weakness and compensate for suboptimal performance caused by factors unrelated to the test. MyBest scores are valid indicators of performance. They are built from valid section scores and their validity is supported by research.
it is just a new feature, in addition, the single score. A nifty feature but nothing to worry about.
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